One weekend, the husband is in the bathroom shaving, when Bubba, a kid from around the neighbourhood, comes in after having mowed the lawn for him, and proceeds to pee in the toilet. 

Bubba was rather well endowed and curiosity got the best of the husband and he just had to look. Sure enough, Bubba had the largest penis he had ever seen!!! 

The man asked Bubba, ‘I don’t mean to be too personal, but how did your dick get that big? I couldn’t help but notice...’ 

Bubba laughed and said, ‘Every night before bed, I bang it on the bedpost three times. Heck, it impresses the girls at school!” 

The husband was excited at the simplicity of this technique and could hardly wait to try it himself. 

Before he climbed into bed that night, he whipped it out and banged it on the bedpost three times. He was just climbing into bed with newfound confidence when the wife sits up, half-asleep and rubbing her eyes, and says, ‘Bubba, is that you?”